Saw gummer



Patented Au 12, 1919.

1 M m w w 9 4 a r ecu 1 mm 64 m5 .3. H151. M

c. n. HELM. SAW GUMMER.

' APPLICATION FILED SEPT-2411918.

lain.

CL'YDED. HEDM'; OFFOR'FWORTZHI; TEXAS; ASSIGNOR? TO" OIL MIIJTFJMACHINERY? 86 MfANUFAGTURINGCOE, OF FORTWORTH; TEXAS} ACOR-POEATION-OFTEXAS.

citizen of the United Statesyot America,

residing. at- Fort Worth,.-in the county of QTarrant and State ot- Texas5 have invented certain new and useful Improvementsin Saw-Gu1mners,=,of'which the. following isa metal saw gummers, and the object: '1 s-to provide a saw gumminggmachine which is greatly simplified in operation-and which will gum-or sharpen gin or metal-saws ave -y shorttime and by whichmuch time and labor-will -be savediand loss of material prevented, and to provide a saw gummerin which the gumming. or sharpening attach- ;ments are automatically adjustable to' the saw." Tn the-:operation of gins fordelinting cotton seed the saws are blunted orbecome dull so quickly that frequent gumming andsharpeningis necessary. An hour s time plainly shows thedeterioration of: the saw iii-removing the lint= frorntheseed. The object; of this invention is to provide devices bywhich the saws of the-gin can-be cleaned andsharpened ;-inavery short time andto provide devices which will have to be shifted only two or three times to clean and-sharpen the wholegang ofsaws; Another object is to improve the method 015 operation so that there will be uniformity and" greater speed in gumming; and sharpening a'ga'ng of saws. Other objects and advantages will be *fully explained in the followingdescription, and the invention will be more particularly a pointed outin-the-appendedclaims.

Reference is had to the accompanying drawings which form apartof'th is application.

Fignre 1 is-a planview' of'theimproved saw gummers, certain parts being-.broken away. for clearness of illustration.-

Fig. 2 israside elevation of apart-of the machine partly in section.

SLKW GUMMERE Figs 3 is a detaihview of the brace shiftinganechanism.

protecting. hood and thergear shaftl onan enlargediscaler. i l

H Fig. 5. 'san enlarged .detail vi ew showingga p-lannview of the gear for operating Patented'Aug;12,1f919. I Application filed September 24 =1918r- SerialNor255A41v l Fig; 4'- is. a,vertical. crosssection ofith'e the saw glimmer} and also showing, in section,- the means for mounting the protecting hood. I

Similar characters of reference are used to ind catesimilar. parts throughout. the several views.

T he inventionshown mounted on an ordinary: gummer or saw "sharpenerframe, show-n .1n several patents and not necessary to beshown herein. frame for the improved gummer includes a horizontal rectangular structure having. longitudinal members I-and 2 a-nd endv members 3 and 4:. gunrrner casingis com-posed oit' a swinging bearing. member 5, and a hood. 6 is provided and attachedthereto by suitable bolts32. The bearing member 5 has end cylindrical flanges "7' integral therewith. The gummer casing is swingfinglymounted-by means of sleeves: 8; which 1 have: cylindrical flanges 9 bolted rigidly to the flanges'i; Thesleeves- 8 are-j ournaled in-bearin gs 10 which are attached tothe gummer frame at the: juncture of members 2 and?) 9 and members- 2 i and d.

The gummer casing maythus havea rocking motion in the bearingsv 10. A driving. v

shaft 11- is journaledin the sleeves S ater operating all the gummer gearing Additionalbearing members e forthe shaftsll are positioned withinnthen gumnierl casing.

Bevel gear wheels 12,-preferably thirty-size;

are rigid to shaft 11 andmesh with and drive'bevel gear wheels l3rvvliich are-screwed on vertical sleeves 14. -Thesleeves='14: are

1ournaled-in bearings 15-which consist in depending; portions o-iithe hood casing 5.

The hubs or. projectingsleeves 16" of the gear wheels 13"v restonthefupper endsof the bearings 15 and rotate-thereon. The

floating shafts 17 are provided for the gummers 18. The shafts 17 are made to rotate with the sleeves 1-1 by keys 19 which project through the shafts 17 and loosely through slots 20 in the sleeves 14:. The shafts 17 are supported by spiral springs 21 which rest on interior shoulders 22 in the sleeves 14 and by heads 23 on the shafts 17, the springs bearing against shoulders 22 and against heads 23. The shafts 17 are thus made floating shafts, being vertically yielding. The gummers 18 are adapted to engage the saws 2a which are rigid with the shaft 25. The shaft 25 is mounted on the frame of the gumming machine.

The gummers 18 are swung in and out of engagement with the saw teeth automatically by means of an adjustable rod 26 which is connected to the part 15 of the gummer casing and actuated by suitable driving means through shaft 27. The end of rod 26 is screwed into part 15 and braced by a lock-nut 26. The shaft 27 is driven by any suitable power through sprocket wheel '28. This shaft drives sprocket wheels 29 which drive sprocket chains 30. The chains 30 drive sprocket wheels 31 which are rigid with shaft 11 for driving this shaft which drives all the gummers simultaneously, as above mentioned.

A brace 33 is provided for the saws 2 1 to prevent axial movement of the saws while the saws are being gummed or sharpened. This brace has a horizontal sliding motion. Rods 34: are connected to the frame or brace 33 and at the other end pivotally connected to actuating bars 35 which are pivotally mounted on shafts or pivot bolts 36. The bars 35 are actuated by cams 37'on the rotating shaft 38 and the rotation of this shaft must be timed to withdraw the brace 33 when the gang of saws is to be axially shifted. Spiral springs 39 on the rods 34 hold the brace 33 in position while the brace is in operation.

The frame which carries the gumming mechanism is shifted by rack 40 which is attached thereto and by a pinion 41 on the shaft 42 which is provided with a hand wheel 13. As stated above only two or three shifts of the saws will be necessary as the gummers are sufficient in number to gum all the saws before and between the shifts.

Various changes in the construction, proportion and arrangement of the several parts may be made without departing from the appended claims.

What I claim is 1. A saw gummer and sharpener comprising a frame, bearings mounted on said frame, a gummer casing provided with sleeves swingingly mounted in said bearings, a drivlng shaft journaled in said sleeves, a plurality of gummers provided.

with vertically disposed floating shafts journaled in said casing, gearing operatively connecting said floating shafts with said driving shaft, means for rocking said casing to throw said gummers in and out of engagement with saws to be gummed or sharpened, and means for shifting said frame.

2. A saw gummer and sharpener comprising a frame, bearings mounted on said frame, a gummer casing having sleeves journaled in said bearings, a driving shaft journaled in said sleeves, gummers provided with floating shafts journaled in said casing, gearing operatively connecting said floating shafts with said driving shaft, means for rocking said casing to throw said gummers in and out of engagement with saws to be gummed, and means for shifting said frame.

3. A saw gummer and sharpener comprising a frame, bearings mounted on said frame, a gummer casing having cylindrical flanges on the ends thereof, sleeves having cylindrical flanges bolted to the last named flanges and journaled in said bearings, a

driving shaft journaled in said sleeves,

gummers provided with floating shafts journaled in said casing, gearing operatively connecting said floating shafts with said driving shaft, means for rocking said casing to throw said gummers in and out of engagement with saws to be gummed, a saw brace and means moving the saw brace in and out of engagement with said saws, and means for shifting said frame when said brace is out of engagement with the saws.

4. A saw gumming and sharpening machine having a swinging casing, a driving shaft journaled in said casing, a plurality of gummers provided with floating shafts journaled in said casing, gearing operatively conmeeting said floating shafts with said driving shaft, and means for swinging said gummers in and out of engagement with the saws'to be gummed and sharpened.

5. A saw gumming and sharpening.machine having a swinging casing, a driving shaft journaled in said casing, a plurality of beveled gear wheels on said shaft, vertical sleeves journaled in said casing and beveled pinions on said sleeves meshing with said gear wheels, floating shafts pr vided with gummers and journaled in said sleeves and loosely connected therewith and driven thereby and means for swinging said gummers or Sharpeners in and out ofengagement with the saws to be gummed and sharpened.

6. A saw gumming and sharpening machine having a swinging casing, a driving vertical sleeves journaled in said casing and beveled pinions on said sleeves meshing with said gear wheels, floating shafts journaled in said sleeves and carrying saw gumming and sharpening devices, keys rigid with said floating shaft and engaging said vertical sleeves loosely whereby said sleeves drive said floating shafts and means for swinging said casing to throw said gumming and sharpening devices out of mesh and 1 0 in mesh with the saws to be gummed and sharpened.

In testimony whereof, I set my hand, this 10th day of September, 1918.

CLYDE D. HELM.

copies, 0! this patent may be obtained for Me cents each, by addressing the "commissioner of Patents,

Washington, D. 0." 

